Poor health may be a barrier to success. 健康欠佳可能成为取得成功的障碍。
Heavy duties on imports and exports are a barrier to international trade. 进出口的高关税是国际贸易的障碍。
In vitro mature (IVM) rate and pathenogetic activation rate ofporcine oocytes, at present, are still low, which become a barrier to progress in research ofporcine embryonic engineering. 但是现有猪卵母细胞体外成熟体系成熟率较低，孤雌激活率和激活质量也较差，制约猪胚胎工程进一步研究。
The wall acts as a barrier to entry . 这堵墙是入口的屏障。
Poor health may is a barrier to success. 健康欠佳可能成为取得成功的障碍.
"The system is working as a barrier to recruitment. "该体系对招生工作来说是个障碍。